Make usage of openSSL optional #170

Job	Run time
Check (ubuntu-latest, default)	1m 6s
Check (ubuntu-latest, bundled)	1m 5s
Check (ubuntu-latest, bundled_without_openssl)	1m 14s
Check (ubuntu-latest, buildtime_bindgen)	1m 13s
Check (macos-13, default)	1m 59s
Check (macos-13, bundled)	1m 53s
Check (macos-13, bundled_without_openssl)	1m 44s
Check (macos-13, buildtime_bindgen)	2m 24s
Check (macos-14, default)	59s
Check (macos-14, bundled)	1m 3s
Check (macos-14, bundled_without_openssl)	57s
Check (macos-14, buildtime_bindgen)	1m 29s
Check (windows-2019, default)	7m 51s
Check (windows-2019, bundled)	9m 3s
Check (windows-2019, bundled_without_openssl)	2m 26s
Check (windows-2019, buildtime_bindgen)	9m 56s
	46m 22s

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